The Rhode Island Department of Health (RIDOH) and the Rhode Island Department of Environmental Management (DEM) have advised the public to avoid contact with a section of Tiogue Lake near Briar Point Beach in Coventry. This recommendation follows confirmation of a cyanobacteria bloom, also known as blue-green algae, in the area.
Cyanobacteria are naturally present in bodies of water but can form harmful algae blooms (HABs) under certain environmental conditions. The agencies state that all recreational activities such as swimming, fishing, boating, and kayaking should be avoided at this location due to health risks. “HABs can produce toxins which can be harmful to humans and animals,” according to RIDOH and DEM.
Officials urge caution throughout Tiogue Lake since HABs can shift locations within ponds and lakes. Residents are advised not to drink untreated water or eat fish from affected areas. Pet owners should also prevent their animals from drinking or swimming in these waters.
Contact with toxin-producing cyanobacteria may result in irritation of the skin, nose, eyes, and throat. Ingesting contaminated water could cause symptoms including stomachache, diarrhea, vomiting, and nausea. Less common effects include dizziness, headache, fever, liver damage, and nervous system issues. Young children and pets face higher risks because they may swallow more water while playing or swimming. Anyone experiencing symptoms after exposure is encouraged to consult a healthcare provider.
Instructions for those who come into contact with a cyanobacteria bloom include rinsing skin immediately with clean water and showering upon returning home. Exposed pets should be washed right away; owners are told not to let pets lick algae off their fur. If pets show signs like lethargy or gastrointestinal distress within a day of exposure, a veterinarian should be contacted promptly.
Water affected by HABs may appear bright to dark green with thick floating algae resembling green paint or pea soup. The agencies recommend avoiding any water that looks like this for both people and animals.
Suspected blooms can be reported to DEM’s Office of Water Resources by phone at 401-222-4700 (Press 6) or via email at DEM.OWRCyano@dem.ri.gov; photographs are helpful for identification purposes. Further information about current advisories is available on the Freshwater Cyanobacteria Tracker Dashboard at www.dem.ri.gov/bluegreen.
